Improvement in hemp-brakes



WILLIAM s. LAWRENCE.

improvement in Hemp Brakes.

No, 125,466. Patented April'9,1872.

AM PHOTU'LIT/IDGEAPHIC [0. M X/ GJPHHNES PROCESS ATENT QFFIGE.

WILLIAM S. LAWRENCE, OF WINCHESTER, KENTUCKY.

IMPROVEMENT IN HEMP-BRAKES.

Specification forming part of Letters Patent No. 125,466, dated April 9,1872.

To all whom it may concem:

Be it known that I, VVILLIAM S. LAWRENCE, of Winchester, in the State ofKentucky, have invented certain new and useful Improvements inHemp-Brakes; and do hereby declare the following to be a full, clear,and .exact description thereof, reference being had to the accompanyingdrawing and to the letters of reference marked thereon.

' The nature of my invention consists in the construction andarrangement of a hempbrake, in which the movable beaters give a yieldingblow, as will be hereinafter more fully set forth.

In order to enable others skilled in the art to which my inventionappertains to make and use the same, I will now proceed to describe itsconstruction and operation, referring to the annexed drawing, whichforms a part of this specification, and in which- Figure 1 is a sideview of my machine; and Fig. 2 is a longitudinal vertical section of thecentral part of my machine.

A represents the bed-frame of my machine, upon each side of which aretwo standards, B B, and a suitable distance from the center. The twostandards on either side of the frame are braced by suitablecross-braces, while those on either side of the center are connected bya top cross-bar. ()n the inner side of each standard B is a recess, inwhich is placed a journal-box, a, with a spring, b, above and a similarspring below the box. In these boxes are placed the journals of tworocking bars, C C, running across the frame, and in the center of eachrocking bar is attached a walking beam, D. To the inner end of each ofthe walking beams D is attached a pitman, E, the lower end of which isattached to a wrist-pin, e, on a wheel, G. This wheel is placed in thecenter of the frame A, upon the inner end of a shaft, which is placed insuitable journalboxes and revolved by crank or other suitable power.Around the wrist-pin e is placed a bisected box, d, and around the sameis placed a metal strap or band,-f, which is fastened by means ofawedge-key, h, and the two pitmen E E are hinged close together to thisstrap or band. The outer end of each walking beam D is connected by apitman or connectingbar, I, with the outer connected ends ofbeatms orknives J, the inner ends of which are attached to a rocking bar, K,mounted in short posts on the frame A. The beaters or knives J J workbetween similar but stationary knives, J, arranged a short distanceabove the bed frame. The blow of the movable beaters J J is yielding onaccount of the springs b .b placed above and below the boxes (1 a, inwhich the journals of the rocking bars C C have their bearings.

Having thus fully described my invention,

what I claim as new, and desire to secure by Letters Patent, is

The walking beams D D attached to the rocking bars C C, having theirbearings in the journal-boxes a a, and said boxes provided with aspring, 11, both above and below, substantially as and for the purposesherein set forth.

WM. S. LAWRENCE. Attest S. M. BOONE, J. W. LAUGHLIN.

